PHP Learning

birthdayCakeCandles

//https://www.hackerrank.com/challenges/birthday-cake-candles/problem

function birthdayCakeCandles($n, $ar) {
    /*
     * Write your code here.
     */
    //Splice the array into the size we need
    array_splice($ar, $n);
    //Get the Max value
    $maxValue = max($ar);
    //Get the max count of all values
    // $maxCountArray = array_count_values($ar);
    //Get count of the max value
    // $maxCount = $maxCountArray[$maxValue];
    // return $maxCount;
    
    //Shorten it up
    return array_count_values($ar)[$maxValue];

}

makingAnagrams

https://www.hackerrank.com/challenges/ctci-making-anagrams/problem

function anagramDifference($string1, $string2){

    $array1 = str_split($string1);
    $array2 = str_split($string2);

    foreach($array1 as $key1=>$value1){
        foreach($array2 as $key2=>$value2){
            if($value1 == $value2){
                unset($array1[$key1]);
                unset($array2[$key2]);
                break;
            }
        }
    }
    $arrayCount = count($array1) + count($array2);
    print_r($arrayCount);

}

anagramDifference($a, $b);

miniMaxSum

https://www.hackerrank.com/challenges/mini-max-sum/problem

function miniMaxSum($arr) {

    sort($arr);
    $highToLow = array_reverse($arr);
    $lowestSum = arraySumToCount(4, $arr);
    $highestSum = arraySumToCount(4, $highToLow);
    echo "$lowestSum $highestSum";

}

function arraySumToCount($numToSum, $array) {
    
    return array_sum(array_slice($array, 0, $numToSum));
}

staircase

https://www.hackerrank.com/challenges/staircase

function staircase($n) {
    foreach(range(1, $n) as $index){
        $whiteSpace = str_repeat(" ", $n - $index);
        $stairs = str_repeat("#", $index);
        echo "$whiteSpace$stairs\r\n";
    }
}